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Fencer Vulns
critical 9.8

CVE-2026-41492 json

Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph

published 2026-04-24 6 mo ago modified 2026-10-25 14 d ago also EUVD-2026-25599 , GHSA-vvf7-6rmr-m29q , GO-2026-5675

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known, plus a Nuclei check

Summary

Dgraph is an open source distributed GraphQL database. Prior to 25.3.3, Dgraphl exposes the process command line through the unauthenticated /debug/vars endpoint on Alpha. Because the admin token is commonly supplied via the --security "token=..." startup flag, an unauthenticated attacker can retrieve that token and replay it in the X-Dgraph-AuthToken header to access admin-only endpoints. This is a variant of the previously fixed /debug/pprof/cmdline issue, but the current fix is incomplete because it blocks only /debug/pprof/cmdline and still serves http.DefaultServeMux, which includes expvar's /debug/vars handler. This vulnerability is fixed in 25.3.3.

Patch / fix

  • go github.com/dgraph-io/dgraph/v25 25.3.3
  • go github.com/hypermodeinc/dgraph/v24 24.1.9
  • dgraph dgraph 25.3.3
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
6 mo ago

Exploit prediction

3.08% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Dgraph <= 25.3.2 - Admin Token Disclosure nuclei detection template
  • github.com https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/dgraph-io/dgraph/v25
<25.3.3
25.3.3
go github.com/dgraph-io/dgraph/v24
<=24.1.8
 no fix listed
go github.com/dgraph-io/dgraph
<=1.2.8
all versions
 no fix listed
go github.com/hypermodeinc/dgraph/v24
<24.1.9
24.1.9

Affected products

  • dgraph-io dgraph

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.